<%--
  Created by IntelliJ IDEA.
  User: LiuZiMing
  Date: 2023/3/25
  Time: 11:25
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<%--受限于jsp文件才可验证并请求转发--%>
<%--<%--%>
<%--Object user = session.getAttribute("user");--%>
<%--if(user == null){--%>
<%--    request.getRequestDispatcher("/login.jsp").forward(request,response);--%>
<%--    return;--%>
<%--}--%>
<%--%>--%>
这是a.jsp文件
</body>
</html>
